Departure / ArrivalThe field trip will start and end in Florianópolis (SC), Brazil.

IntroductionThe Florianópolis Batholith was constructed within a 40 Ma time-span (630-590 Ma), comprising syntectonic to anorogenic granites and composite dykes from high-K calc-alkaline to alkaline composition. A large part of these intrusions is syntectonic, their ascent and emplacement being controlled by major transcurrent structures, such as the Major Gercino Shear Zone (MGSZ), considered to mark the northern limit of the batholith. Coastal outcrops of Neoproterozoic granitic bodies of wide compositional range, many of them associated to coeval mafic magmas, will be visited within the MGSZ domain. To the north of this structure, selected coastal outcrops of a granite-migmatite complex will ensure thought-provoking discussions about the generation and ponding of granitic magmas from water-fluxed melting of amphibolites, quartzo-feldspathic gneisses and other potential Archean to Paleoproterozoic sources. Syntranscurrence granitic magmatism from this region is similar in time and compositional diversity to the one found within the Florianópolis Batholith, but shows distinct isotopic signatures and source characteristics. The large variety in composition and structure will enable participants to think over themes like crustal vs mantle sources, structural control of the magma bodies, geotectonic setting of granite generation and space-time relations. These and many other modern themes in granite generation will be discussed in the pleasant scenario of the Santa Catarina Coast.

The participants will meet at the Oceania Hotel (Florianópolis, SC) at 8 AM on the 26th September, 2015 (departure). The field trip will end at 8 PM on September 30th (Saturday) at the Florianópolis Airport (Florianópolis, SC) for participants to catch their flights back home.